Original Part
Transceiver, Non-Inverting 2 Element 8 Bit per Element 3-State Output 48-SSOP
Alternative Part
Transceiver, Non-Inverting 2 Element 8 Bit per Element 3-State Output 48-TSSOP
Transceiver, Non-Inverting 2 Element 8 Bit per Element 3-State Output 48-TSSOP
1. 74FCT162245ATPAG Substitution Conclusion
From the perspectives of core logic functionality, supply voltage, and pinout, the 74FCT162245ATPAG can serve as a direct replacement for the CY74FCT16245ATPVC. The key differences lie in the drive current and package width: the Original Part (32mA/64mA) features asymmetric high-drive capability, making it particularly suitable for applications requiring strong sink current, such as driving termination resistors. In contrast, the substitute offers a symmetric 24mA drive, resulting in lower overall drive strength. If used to drive heavy loads or long traces, it is essential to evaluate whether the system's noise margin and timing requirements are still met. Additionally, the package changes from the wider BSSOP (7.50mm) to the narrower TSSOP/TFSOP (6.10mm). During replacement, PCB footprint compatibility must be verified, or layout adjustments may be necessary. While functionally substitutable, it is imperative to validate that the drive capability meets the actual load requirements and to account for the mechanical package differences.
2. 74FCT162245CTPAG8 Substitution Conclusion
The 74FCT162245CTPAG8 is identical to the 74FCT162245ATPAG in all key parameters provided. The difference in the part number suffix typically indicates variations in manufacturing lot, environmental compliance marking, or packaging format. Therefore, the substitution conclusion is exactly the same as for the ATPAG version: it is functionally and voltage-compatible, but it shares the same reductions in drive current (from asymmetric high-drive 32mA/64mA to symmetric medium-drive 24mA/24mA) and package width (6.10mm TSSOP vs. 7.50mm BSSOP). It can be used as a functional replacement; however, prior to implementation, it is critical to assess the impact of the output current derating on the specific circuit's drive capability and to confirm PCB layout compatibility.
Analysis ID: 6D9B-7187000
Based on part parameters and for reference only. Not to be used for procurement or production.
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